pynbody.filt.HighPass#
- class pynbody.filt.HighPass(prop: str, min: float | str | UnitBase)[source]#
Bases:
Filter
Selects particles exceeding a specified threshold of a named property
Methods
__call__
(sim)Return a boolean mask indicating which particles are in the filter.
cubic_cell_intersection
(centroids)Compute the intersection with cubic cells with the specified centroids.
where
(sim)Return the indices of particles that are in the filter.
- __init__(prop: str, min: float | str | UnitBase)[source]#
Create a high-pass filter.
- Parameters:
prop – The name of the simulation array to filter on.
min – The minimum value of the property. If a string, it is interpreted as a unit string.
- cubic_cell_intersection(centroids)#
Compute the intersection with cubic cells with the specified centroids.
This is currently used by the swift loader to figure out which cells to load
- where(sim: snapshot.SimSnap)#
Return the indices of particles that are in the filter.
This is a convenience method that is equivalent to np.where(f(sim)) but may be more efficient for some filters.